Densities and viscosities have been measured for the binary mixtures of acetonitrile with linear and brached alkanols (C-1-C-4) over the entire composition range at (298.15, 303.15, 308.15, and 313.15) K. The experimental density (rho) and viscosity (eta) values were used to calculate the excess molar volume (V-E) and viscosity deviation (Delta eta) The effects of chain length and branching of alkanols on V-E and Delta eta values have been discussed. The V-E and Delta eta values are fitted to a Redlich-Kister equation.